This is the second version. It adds a strategy for the sysctls so that we can reject any change to a value that was already negative. This way it's possible to disable modify_ldt temporarily or permanently (eg: lock down a server) as suggested by Kees.
Willy Tarreau (2): sysctl: add a new generic strategy to make permanent changes on negative values x86/ldt: allow to disable modify_ldt at runtime Documentation/sysctl/kernel.txt | 16 +++++++++++++ arch/x86/Kconfig | 17 ++++++++++++++ arch/x86/kernel/ldt.c | 15 +++++++++++++ kernel/sysctl.c | 50 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 98 insertions(+) -- 1.7.12.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/